Home / 42,930.42-64,396.17-13,347.60

Finding the Fourth Proportional to 42,930.42, 64,396.17 and 13,347.60

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Solution

The fourth proportional to 42,930.42, 64,396.17 and 13,347.60 is: 20,021.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,930.42 : 64,396.17 = 13,347.60 : x
  2. Step 2: Convert to fraction form
    42,930.42/64,396.17 = 13,347.60/x
  3. Step 3: Cross multiply
    42,930.42x = 64,396.17 × 13,347.60
  4. Step 4: Simplify right side
    42,930.42x = 859,534,318.69
  5. Step 5: Solve for x
    x = 859,534,318.69/42,930.42
  6. Step 6: Final answer
    x = 20,021.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.